ML18139A308

LER 80-005/01T-0:on 800306,during Preparation for Type a Testing,Leakage Found Through Rshx Diaphragm Plate Seal Welds.Caused by Lack of Fusion & Slag Inclusion.Defects to Be Repaired & Inspected by Nondestructive Test Methods

ML18139A308
Person / Time
Site:	Surry
Issue date:	06/06/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A306	List: ML18139A305 ML18139A307 ML18139A308
References
LER-80-005-01T, LER-80-5-1T, NUDOCS 8006120341
Download: ML18139A308 (1)

Text

NRC FORM 366 (7-77} U.S. NUCLEAR REGULATORY COMMISSION -LICENSEE EVENT REPORT e CONTROL BLOCK: I I ! '1' (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

L----'--...,_-~~-~-6

\.V L V I A I s I p I s I 2 101 0 I O I -I O I O I O I O I O I -I O I O 101 4 11 I 1 I 1 I 1 101 . I I 0 7 8 9 LICENSEE CODE . 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T 0JJ 7 B

~© I o I s I o I o I o I 21

• s I 1 101 o I 3 I o I 6 I s I o

• 101 o I 6 I o I 6 I s I o

• I G)

• 60 61 DOCKET NUMBER

• 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES*@

I With the unit at cold shutdown, preparation for Type A testing revealed leakage through RSHX diaphragm plate seal welds. This is reportable per Technical

[QJ]J tion 6.6.2.a.9.

Because the unit was at cold shutdown, the health and safety of the public were not affected.

IT]]] 7 8 9 [ITI] 7 8 SYSTEM CODE Is IB I@ 9 10 Q LEA/RO LVENT YEP.A v_:,; ~EPORT I 8 I O I NUMBER 21 22 CAUSE CAUSE CODE SUBCODE COMPONENT CODE w w@ HI rl El xi cl Hl03) 11 12 13 18 SEQUENTIAL OCCURRENCE REPORT NO. CODE I I OJ oJ sj l /j I o I 1 I 23 24 26 27 28 29 COMP. SUBCODE W 19 REPORT TYPE LI.I 30 VALVE SUBCODE w@ 20 ACTION FUTURE EFFECT SHUTDOWN r::;:;,. ATTACHMENT NPRD-4 FORM SUB. 31 PRIME COMP. SUPPLIER REVISION NO. w 32 COMPONENT MANUFACTURER 80 TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED LEJ@l.BJ@)

W@ Lzl Io Jo I oJ ol lxJ@ 33 34 35 36 37 40 41 W@ 43 rn.J(§) 42 I y Io j 3 Io I CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ 44 47 )The leaking seal welds in the RSHX were attributed to lack of fns ion and slag inclusion l in the weld areas. The diaphragm seal welds will be inspected and all defects will be QJJJ -repaired and inspected by Non-destructive test methods. A design modification, incor-o::TIJ LI-----------------,------~----------------'

CIII] lporating a gasket to reduce diaphragm seal weld stress due to external forces, will be ITTIJ installed.

7 8 9 FACILITY STATUS % POWER OTHER STATUS ITTIJ l.g_J@ lo! olol~~I s 9 10 12 1'3 44 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT 0~ ACTIVITY~ ~@) ~@I NA 7 8 9 10 11 44 PERSONNEL EXPOSURES r:;;:;,. 80 METHOD OF A DISCOVERY DISCOVERY DESCRIPTION ~@1...I __:P::..;r::.e:::.pi::.a::::.::.r.::::ac::tc:i:::::o~n/;.....af..;o,!Jri....-T

.. y;t...p!,IS.e_"..1::A

.... "___.t..1:e~s::Wt1...Jw' u~g.,._ __ _....j 45 . 46 80 .LOCATION OF RELEASE @) NA 45 80 NUMBER (:;:;\ TYPE DESCRIPTION o::EJ Io Io I 0J0u.J1.....--~D...-----------------------'

7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION6

[2IJ IO IO IO l@)i__ ___ __:N:::.:A

____________________

__. 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY '43' TYPE DESCRIPTION @I]~@ . NA 7 8 9 10 so PUBLICITY C\ NRC USE ONLY ISSUEDQ DESCRIPTION~

., IT.TI] uu~L..-__ . __

• __ ___:_::m:;_

_____________ I I I I/ I! I I I I I I~ 8 9 1 O GB 69 80 ;; J. L. Wilson NAME OF PREPARER------------------

8 0061. 2 03 <../ / s PHO N E : __ __.(..,,8,..,0r.:,4:..,)

___ 3...,5.J.7..;;:;-'-'3-'-J .o8_..4 __ _ 0 Q. "